1995 TOYOTA SUPRA low beam

TROUBLESHOOTING
The table below will be useful for you in troubleshooting these electrical problems. The most likely causes
of the malfunction are shown in the order of their probability. Inspect each part in the order shown, and
replace the part when it is found to be faulty.
USA:
 Trouble Parts name (See page)
 
 
 
 
 
 
 
Headlight does not light
(Taillight is normal)
 
 
 
 
 
 
 
1. FL MAIN
2. HEAD Fuse (LH, RH) (BE±5)
3. Headlight Control Relay (BE±16)
4. Headlight Dimmer Switch (BE±15)
5. Light Control Switch (BE±15)
6. Integration Relay (BE±17)
7. Wire Harness
8. Headlight Bulb
 
 
 
 
 
Headlight does not light
(Taillight does not light up)
 
 
 
 
 
1. FL MAIN
2. Light Control Switch (BE±15)
3. Integration Relay (BE±17)
4. Wire Harness
5. Headlight Bulb
 
 
 
Only one side light does not light
 
 
 
1. HEAD Fuse (LH, RH) (BE±5)
2. Headlight Bulb
3. Wire Harness
 
 
ºLo±Beamº does not light 
 
1. Headlight Dimmer Switch (BE±15)
2. Wire Harness
 
 
ºHi±Beamº does not light 
 
1. Headlight Dimmer Switch (BE±15)
2. Wire Harness
 

ºFlashº does not light 

1. Headlight Dimmer Switch (BE±15)
2. Wire Harness
CANADA:
 
 Trouble
 
 Parts name (See page)
 
 
 
 
 
 
 
 
Headlight does not light
(Taillight is normal)
 
 
 
 
 
 
 
 
1. FL MAIN
2. Headlight Control Relay
3. Daytime Running Light Relay (BE±18)
4. Daytime Running Light No.2 and No.3 Relay (BE±19)
5. Headlight Dimmer Switch (BE±15)
6. Light Control Switch (BE±15)
7. Integration Relay (BE±17)
8. Wire Harness
9. Headlight Bulb
 
 
 
 
 
Headlight does not light
(Taillight does not light up)
 
 
 
 
 
1. FL MAIN
2. Light Control Switch (BE±15)
3. Daytime Running Light Relay (BE±18)
4. Daytime Running Light No.2 and No.3 Relay (BE±19)
5. Integration Relay (BE±17)
6. Wire Harness
± BODY ELECTRICAL SYSTEMHEADLIGHT AND TAILLIGHT SYSTEMBE±11

HEADLIGHT AIM ADJUSTMENT
Adjusting headlight aim only
1. INSPECT HEADLIGHT AIM
Do the following before inspection.
wMake sure the body around the headlight is not
deformed.
wPark the vehicle on a level spot.
wThe driver gets into the driver's seat and puts the vehicle
in a state ready for driving (with a full tank).
wBounce the vehicle several times.
2. ADJUST HEADLIGHT VERTICAL ALIGNMENT
If the bubble is outside the acceptable range of the beam
angle gauge, adjust it using adjusting screw A.
3. ADJUST HEADLIGHT HORIZONTAL ALIGNMENT
If the º0º moves away from the mark beyond the acceptable
range, adjust the º0º back to the mark using adjusting screw
B.
± BODY ELECTRICAL SYSTEMHEADLIGHT AND TAILLIGHT SYSTEMBE±13

COMBINATION SWITCH DISASSEMBLY
AND ASSEMBLY
COMBINATION SWITCH INSPECTION
1. INSPECT LIGHT CONTROL SWITCH CONTINUITY 
 Switch position
 
 Tester connection to
terminal number
 
 Specified condition
 
 OFF
 
 ±
 
  No continuity
 TAIL A2±A11  Continuity
 HEAD A2±A11±A13  Continuity
If continuity is not as specified, replace the switch.
2. INSPECT DIMMER SWITCH CONTINUITY
 
 Switch position
 
 
Tester connection to
terminal number 
 Specified condition
 Flash A9±A12±A14  Continuity
 Low beam A3±A9  Continuity High beam A9±A12  Continuity
If continuity is not as specified, replace the switch.
± BODY ELECTRICAL SYSTEMHEADLIGHT AND TAILLIGHT SYSTEMBE±15

DAYTIME RUNNING LIGHT MAIN RELAY
INSPECTION
INSPECT RELAY CIRCUIT
Disconnect the connector from relay and inspect the connec-
tor on wire harness side, as shown.
 
 Tester connection to
terminal number 
 Condition
 
 Specified condition
 
 5±Ground
 
 Headlight dimmer switch position Low
beam or high beam 
  No continuity
 5±Ground  Headlight dimmer switch position Flash Continuity 8±Ground Parking brake switch position OFF No continuity 8±Ground Parking brake switch position ON Continuity 
16±Ground
 
Headlight dimmer switch position Low beam
 
No continuity
 16±Ground Headlight dimmer switch position Flash or
High beam Continuity
 
 13±Ground
 
 Constant
 
 Continuity
 18±Ground Constant Continuity
 2±Ground Ignition switch position LOCK or ACC No voltage
 2±Ground Ignition switch position ON Battery positive voltage
 11±Ground Engine Stop No voltage
 11±Ground Engine Running Battery positive voltage
 15±Ground  
15±Ground
17 GroundConstantBattery positive voltage 17±Ground Constant Battery ositive voltage
If the circuit is as specified, trying replacing the relay with a
new one. If the circuit is not as specified, inspect the circuit
connected to other parts.
PARKING BRAKE SWITCH INSPECTION
See page BE±52 BE±18
± BODY ELECTRICAL SYSTEMHEADLIGHT AND TAILLIGHT SYSTEM

wConnect the positive (+) probe of the ammeter to
terminal B of the generator.
wConnect the positive (+) probe of the voltmeter to
terminal B of the generator.
wGround the negative (±) probe of the voltmeter.
(b) Check the charging circuit as follows:
With the engine running from idling to 2,000 rpm, check the
reading on the ammeter and voltmeter:
Standard amperage:
10 A or less
Standard voltage:
At 25°C (77°F)
13.6±14.8 V
At 115°C (239°F)
S13.2±14.0 V
If the voltmeter reading is more than standard voltage, re-
place the voltage regulator.
If the voltmeter reading is less than standard voltage, check
the voltage regulator and generator as follows:
wWith terminal F grounded, start the engine and check
the voltmeter reading of terminal B.
wIf the voltmeter reading is more than standard voltage,
replace the voltage regulator.
wIf the voltmeter reading is less than standard voltage,
check the generator.
8. INSPECT CHARGING CIRCUIT WITH LOAD
(a) With the engine running at 2,000 rpm, turn on the high beam
headlights and place the heater blower switch at ºHIº.
(b) Check the reading on the ammeter.
Standard amperage:
30 A or more
If the ammeter reading is less than the standard amperage,
repair the generator.
HINT: If the battery is fully charged, the indication will some-
times be less than standard amperage.
9. REINSTALL ENGINE UNDER COVER CH±6
± CHARGING SYSTEMON±VEHICLE INSPECTION

RADIATOR REMOVAL
Installation is in the reverse order of removal.
1. REMOVE ENGINE UNDER COVER
INSTALLATION HINT: Start the engine, and check for cool-
ant and A/T fluid leaks.
2. REMOVE BATTERY AND BATTERY TRAY
3. DRAIN ENGINE COOLANT
4. 2JZ±GTE:
REMOVE NO.2 AIR TUBE
5. REMOVE NO.2 FAN SHROUD
(a) Remove the 2 clips.
(b) Disconnect the claw of the No.2 fan shroud from the hook of
the No.1 fan shroud, and remove the No.2 fan shroud.
6. REMOVE AIR CLEANER DUCT
7. 2JZ±GTE:
REMOVE NO.5 AIR HOSE
8. REMOVE LH HEADLIGHT BEAM ANGLE GAUGE
Remove the screw and beam angle gauge.
9. DISCONNECT HOSES FROM RADIATOR
Disconnect these hoses from the radiator:
(1) Reservoir inlet hose
(2) Upper radiator hose
(3) Lower radiator hose
(4) A/T:
2 oil cooler hoses
Plug the hose ends.
INSTALLATION HINT: Check the A/T fluid level.
(See item 21 in Maintenance) EG±346
± ENGINECOOLING SYSTEM